On: Sunlight through glass does not provide Vitamin D

[meschi]

Well, when you get sunburn i.e. high UVB exposure, you get high UVA exposure, too. My understanding is, that UVA radiation causes cancer.

But I would like to see some clarification on this topic, too.

[_9vzr → meschi]

UVB causes melanoma, that is also a form of cancer. So typical glass would prevent sunburn and melanomas from forming but not the deep genetic and tissue damage that UVA causes. It is not a bad idea to apply SPF moisturizer before going out if you plan to spend anytime with the sun shining on you.

[dzhiurgis → meschi]

UVA causes DNA damage (and potentially cancer) indirectly via oxidation.

From what I read UVB melanoma is an "easy" type of cancer.